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United States Patent | 6,168,163 |
Thorson ,   et al. | January 2, 2001 |
A shaft seal is interposed between a tank and a rotating shaft extending through the tank and having a non-rotatable stator fixed to the tank and a rotor fixed for rotation to the shaft. A multiple labyrinth structure is formed between the rotor and the stator for preventing the ingress of contaminants from the tank and the egress of lubricant from the shaft. A self-aligning arrangement is constructed and arranged to permit the stator to shift axially along the shaft and compensate for various forces inflicted on the shaft as the shaft rotates.
Inventors: | Thorson; John L. (Wauwatosa, WI); Komassa; Robert L. (Menomonee Falls, WI) |
Assignee: | Mixer Systems, Inc. (Pewaukee, WI) |
Appl. No.: | 195007 |
Filed: | November 18, 1998 |
Current U.S. Class: | 277/419; 277/348; 277/418; 277/420; 277/421 |
Intern'l Class: | F16J 015/447 |
Field of Search: | 277/348,418,419,420,421 366/331,45,46,47 |
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